Sulfur, lead, and mercury characteristics in South Africa coals and emissions from the coal-fired power plants
文献类型：期刊论文
| 作者 | Zerizghi, Teklit1,2,4; Guo, Qingjun1,3; Zhao, Changqiu1,2; Okoli, Chukwunonso Peter1,2,5 |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 81期号:4页码:15 |
| 关键词 | Coal Elemental occurrence Isotopic composition Coal-fired power plants Emission |
| ISSN号 | 1866-6280 |
| DOI | 10.1007/s12665-021-10046-5 |
| 通讯作者 | Guo, Qingjun(guoqj@igsnrr.ac.cn) |
| 英文摘要 | Coal-fired power plants (CFPPs) are the dominant source of electricity in South Africa due to coal abundance in the country. However, emissions of SO2, Pb, and Hg have raised serious environmental and public health concerns. Hence, to reduce emissions and utilize coal efficiently, it is essential to estimate emissions trends, understanding existential forms of the elements in coals, and their affinities to minerals, organic matter, and pyrite. Therefore, this paper aimed to assess the forms of elemental occurrence of sulfur (S), lead (Pb), mercury Hg affinities in the coals using statistical correlations and their isotopic compositions. This study also estimated SO2, Pb, and Hg emissions from 1971 to 2018 from the CFPPs based on activity data and emission factors. Based on the results, South African coals mainly comprise equivalent fractions of organic and pyritic S. The Pb were correlated with ash content (R = 0.61), Si, Al, and Ti, which indicates clay mineral-bound Pb. However, the highest Pb-206/Pb-207 and the lowest Pb-208/Pb-206 in South Africa coals which contain high inertinite (organic matter) and low S, also reveal organically associated Pb. Similarly, clay minerals linked Hg appeared as of Hg relationship with ash (R = 0.641) and major elements, and the remaining could be an organic matter associated. As an organic matter-associated element least cleanability and readily oxidizing nature, burning South African coals containing a substantial quantity of organic S and organically bound Pb and Hg without washing results in higher emissions. The estimated SO2, Pb, and Hg emissions were 355.84 Gg, 168.91 tons, and 4.17 tons in 1971, and increased to 1468.13 Gg, 696.89 tons, and 17.20 tons in 2018, respectively. The values approximately increased by a factor of 4. |
| WOS关键词 | STABLE-ISOTOPE SIGNATURES ; ATMOSPHERIC EMISSIONS ; WITBANK COALFIELD ; TRACE-ELEMENTS ; DIOXIDE EMISSIONS ; HUMAN HEALTH ; BY-PRODUCTS ; COMBUSTION ; CHINA ; GEOCHEMISTRY |
| 资助项目 | NSFC[41761144066] ; NSFC[41625006] ; NSFC[41561144005] ; Sino-German Center[GZ1055] ; CAS-TWAS Ph.D. fellowship |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000754223800002 |
| 出版者 | SPRINGER |
| 资助机构 | NSFC ; Sino-German Center ; CAS-TWAS Ph.D. fellowship |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/170721]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Guo, Qingjun |
| 作者单位 | 1.Chinese Acad Sci, Ctr Environm Remediat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China 4.Hamelmalo Agr Coll, Natl Commiss Higher Educ, POB 397, Keren, Eritrea 5.Alex Ekwueme Fed Univ, Dept Chem Biochem, Ndufu Alike, Ebonyi State, Nigeria |
| 推荐引用方式 GB/T 7714 | Zerizghi, Teklit,Guo, Qingjun,Zhao, Changqiu,et al. Sulfur, lead, and mercury characteristics in South Africa coals and emissions from the coal-fired power plants[J]. ENVIRONMENTAL EARTH SCIENCES,2022,81(4):15. |
| APA | Zerizghi, Teklit,Guo, Qingjun,Zhao, Changqiu,&Okoli, Chukwunonso Peter.(2022).Sulfur, lead, and mercury characteristics in South Africa coals and emissions from the coal-fired power plants.ENVIRONMENTAL EARTH SCIENCES,81(4),15. |
| MLA | Zerizghi, Teklit,et al."Sulfur, lead, and mercury characteristics in South Africa coals and emissions from the coal-fired power plants".ENVIRONMENTAL EARTH SCIENCES 81.4(2022):15. |
入库方式： OAI收割
来源：地理科学与资源研究所
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